求助帖，万年历日期对不齐
#include <stdio.h> int monthdays[12]={31,28,31,30,31,30,31,31,30,31,30,31};
int leapyearmonthdays[12]={31,29,31,30,31,30,31,31,30,31,30,31}; int year=2011; int month=4; int day=22;
int isweekday(int y,int m,int d) {
int weekday; if(m<3) {
m+=12; y--; }
return weekday=(2+2*m+3*(m+1)/5+y+y/4-y/100+y/400)%7; }
int isleapyear(int y) {
if (y%400==0 || y%100!=0 && y%4==0) return 1; return 0; }
void print_month(int y,int m) {
int i=0;
int startday=isweekday(y,m,1); printf("\n%4d/%02d\n",y,m);
printf("*****************************\n"); for(i=0;i<startday;i++) {
printf(" "); }
if(isleapyear(y)) {
for(i=1;i<=leapyearmonthdays[m-1];i++) {
printf("%3d ",i); if((startday+i)%7==0) printf("\n"); }
} else {
for(i=1;i<=monthdays[m-1];i++) {
printf("%3d ",i); if((startday+i)%7==0) printf("\n"); } }
printf("\n*****************************\n"); }
void print_year(int y) {
int i;
for(i=1;i<=12;i++)
{
print_month(y,i); } }
int counterdays(int y,int m,int d) {
int temp=0; int days=0; int i;
for(i=year+1;i<y;i++) {
if(isleapyear(i)) temp++; }
if(y-year>=1) {
if(isleapyear(year) && month<=2) temp++;
if(isleapyear(y) && m>2 ||(m==2 && d==29)) temp++;
for(i=month+1;i<=12;i++) {
days+=monthdays[i-1]; }
for(i=1;i<m;i++) {
days+=monthdays[i-1]; }
days+=(y-year-1)*365; }
if(!(year==y && month==m)) {
days+=monthdays[month-1]-day+d; } else {
days+=d-day; }
days+=temp;
printf("\n今天距%d/%d/%d还有%d天\n",y,m,d,days);
return days; }
void setday(int y,int m,int d) {
year=y; month=m; day=d; }
void main() {
int temp; int y,m,d; char ch; do{
printf("请输入要查询的方式(1.查询年历2.查询月历3.计算日期4.设置当前日期(%d/%d/%d)):",year,month,day); scanf("%d",&temp); switch(temp) {
case 1:
printf("请输入年份(ep:2011):"); scanf("%d",&y); print_year(y); break; case 2:
printf("请输入年月(ep:2011/4):"); scanf("%d/%d",&y,&m); print_month(y,m); break; case 3:
printf("请输入日期(ep:2011/4/22):"); scanf("%d/%d/%d",&y,&m,&d); counterdays(y,m,d); break; case 4:
printf("请输入当天日期(ep:2011/4/22):"); scanf("%d/%d/%d",&y,&m,&d); setday(y,m,d); break;
default: break; }
printf("\n\n是否继续？(Y键继续,任意键退出)"); getchar();
scanf("%c",&ch);
}while(ch=='y' || ch=='Y'); }
大神帮忙看一下
